关于在c＃中打开pdf文件 [英] about opening a pdf file in c#

问题描述

我想用c＃打开一个pdf文件。我写了下面的代码并得到一个错误，使用未分配的局部变量a

I want to open a pdf file using c# . i have written the following code and got an error as "Use of unassigned local variable a"

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using AxAcroPDFLib;

namespace WindowsFormsApplication4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            AxAcroPDF a;
            a.LoadFile("d:/novels/master_of_the_game.pdf");

            a.Show();
        }

        private void axAcroPDF1_OnError(object sender, EventArgs e)
        {
            MessageBox.Show("unable to open file");
        }
    }
}

推荐答案

喜欢这个？



AxAcroPDF a =新AxAcroPDF（）;

a.loadFile（@C：\ a.pdf）;

：

http://stackoverflow.com/questions/5562691/axacropdf-doesn-not-display-pdf-on-windows-xp [ ^ ]

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog open = new OpenFileDialog();
            open.Title = "Open";
            open.Filter = "All Files|*.*";
            try
            {
                if (open.ShowDialog() == System.Windows.Forms.DialogResult.OK)
                {
                    axAcroPDF1.LoadFile(open.FileName);
                }
            }
            catch (ArgumentException ex)
            {
            MessageBox.Show(ex.Message.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);

            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }
    }
}

string path =C：\\Report\\filename.pdf;

FileStream fs;

fs = File.Open（path，FileMode.Open）;

byte [] bytBytes = new byte [fs.Length];

fs.Read（bytBytes，0，Convert.ToInt32（fs.Length））;

fs.Close（）;

Response.ContentType =application / pdf;

Response.BinaryWrite（bytBytes）;

FileInfo fi1 = new FileInfo（path）;

fi1.Delete（）;

Response.Flush（）;

Response.End（）;

string path = "C:\\Report\\filename.pdf";
FileStream fs;
fs = File.Open(path, FileMode.Open);
byte[] bytBytes = new byte[fs.Length];
fs.Read(bytBytes, 0, Convert.ToInt32(fs.Length));
fs.Close();
Response.ContentType = "application/pdf";
Response.BinaryWrite(bytBytes);
FileInfo fi1 = new FileInfo(path);
fi1.Delete();
Response.Flush();
Response.End();

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